CA1119361A - Methode de production de pate de cellulose au sulfite non blanchie, ou de cellulose blanchie a partir de la pate de noeuds defibree - Google Patents

Methode de production de pate de cellulose au sulfite non blanchie, ou de cellulose blanchie a partir de la pate de noeuds defibree

Info

Publication number
CA1119361A
CA1119361A CA000306697A CA306697A CA1119361A CA 1119361 A CA1119361 A CA 1119361A CA 000306697 A CA000306697 A CA 000306697A CA 306697 A CA306697 A CA 306697A CA 1119361 A CA1119361 A CA 1119361A
Authority
CA
Canada
Prior art keywords
cellulose
pulp
unbleached
knot
knots
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000306697A
Other languages
English (en)
Inventor
Ketil Hasvold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Borregaard AS
Original Assignee
Borregaard AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borregaard AS filed Critical Borregaard AS
Application granted granted Critical
Publication of CA1119361A publication Critical patent/CA1119361A/fr
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials

Landscapes

  • Paper (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
CA000306697A 1977-07-08 1978-07-04 Methode de production de pate de cellulose au sulfite non blanchie, ou de cellulose blanchie a partir de la pate de noeuds defibree Expired CA1119361A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO772420A NO140936C (no) 1977-07-08 1977-07-08 Fremgangsmaate ved fremstilling av sulfittcellulose fra kvistmasse
NO772420 1977-07-08

Publications (1)

Publication Number Publication Date
CA1119361A true CA1119361A (fr) 1982-03-09

Family

ID=19883621

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000306697A Expired CA1119361A (fr) 1977-07-08 1978-07-04 Methode de production de pate de cellulose au sulfite non blanchie, ou de cellulose blanchie a partir de la pate de noeuds defibree

Country Status (5)

Country Link
US (1) US4230524A (fr)
CA (1) CA1119361A (fr)
FI (1) FI63449C (fr)
NO (1) NO140936C (fr)
SE (1) SE7806806L (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4435249A (en) 1979-09-05 1984-03-06 The Black Clawson Co. Process for the oxygen delignification of pulp mill rejects
SE465730C (sv) * 1988-03-17 2001-10-08 Kvaerner Pulping Tech Sätt vid delignifiering av fiberhaltig cellulosamassa
EP2231881A4 (fr) * 2007-12-19 2013-08-28 Fpinnovations Conversion de déchets de type n uds provenant du défibrage chimique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3393121A (en) * 1965-02-05 1968-07-16 Scott Paper Co Soda cook of acid sulfite knotter rejects
US3830688A (en) * 1970-10-23 1974-08-20 Skogsaegarnas Ind Ab Method of reducing the discharge of waste products from pulp mills
US3886035A (en) * 1973-03-12 1975-05-27 Kamyr Inc Process for separating knots from pulp

Also Published As

Publication number Publication date
SE7806806L (sv) 1979-01-09
FI63449C (fi) 1983-06-10
NO772420L (no) 1979-01-09
NO140936C (no) 1979-12-12
US4230524A (en) 1980-10-28
FI63449B (fi) 1983-02-28
FI782164A (fi) 1979-01-09
NO140936B (no) 1979-09-03

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Legal Events

Date Code Title Description
MKEX Expiry